One or more techniques and/or systems are provided for dynamically maintaining user centric data. For example, a data provider app may have knowledge about user centric data associated with a user (e.g., a social network app may have contact information for a social network friend of the user). A user centric profile may be defined for the user centric data based upon information provided by the data provider app (e.g., a contact card may be generated for the social network friend). Responsive to receiving a request for the user centric profile from a requestor app (e.g., an event planning app), the user centric profile may be exposed to the user but not to the requestor app for security and/or privacy purposes. For example, an operating system may present at least some of the user centric profile within an operating system user interface.